buncha/health & fitness/reconstitution

Peptide Reconstitution Calculator

⚕️ Verify all calculations before injecting. Tool does the math; cannot verify your inputs. Cross-reference with vial label and your protocol. Not medical advice.

Peptide preset (optional)

Vial amount

Water (ml)

Dose

Syringe

Draw to this mark

10.0 units

= 0.100 ml on U-100 Insulin (1.0 ml)

💡 Reading the syringe: Insulin syringes have two black lines on the rubber plunger seal. Read your dose against the line closest to the needle (the front line). That's where the fluid actually meets the seal — using the back line will give you slightly less than intended.

This vial will give you

20.0 doses

at 250 mcg per dose

ConcentrationStandard

2500 mcg/ml

Daily

20 days

if 1×/day

Twice daily

10 days

if 2×/day

Weekly

20 weeks

if 1×/week

Show math

Vial total: 5000 mcg
Dose: 250 mcg
Water added: 2 ml
Concentration: 2500 mcg/ml
Volume: dose ÷ concentration = 250 ÷ 2500 = 0.100 ml
Units: volume × 100 = 10.0 units

Calculations only. Always cross-reference with the vial label and your protocol. Store reconstituted peptides per manufacturer instructions (typically refrigerated).

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About Peptide Reconstitution Calculator

Mixing and drawing calculator with visual syringe and vial diagrams. Free online peptide reconstitution tool.

Like every tool on Buncha, this one runs entirely in your browser. There's no upload, no log, no record of what you've pasted or generated. Close the tab and the data is gone.

↳ Have feedback or found a bug? hello@buncha.tools